Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates
To reduce harmful gas emission and improve the operational efficiency, advanced ultra-supercritical power plants put forward higher requirements on the high temperature mechanical properties of applied materials. In this paper, the tensile behavior and deformation mechanisms of MarBN steel are discu...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/24/8745 |
| _version_ | 1797456625078894592 |
|---|---|
| author | Yifan Cai Quanyi Wang Meng Liu Yunqing Jiang Tongfei Zou Yunru Wang Qingsong Li Yubing Pei Hong Zhang Yongjie Liu Qingyuan Wang |
| author_facet | Yifan Cai Quanyi Wang Meng Liu Yunqing Jiang Tongfei Zou Yunru Wang Qingsong Li Yubing Pei Hong Zhang Yongjie Liu Qingyuan Wang |
| author_sort | Yifan Cai |
| collection | DOAJ |
| description | To reduce harmful gas emission and improve the operational efficiency, advanced ultra-supercritical power plants put forward higher requirements on the high temperature mechanical properties of applied materials. In this paper, the tensile behavior and deformation mechanisms of MarBN steel are discussed at different strain rates (5 × 10<sup>−3</sup> s<sup>−1</sup>, 5 × 10<sup>−4</sup> s<sup>−1</sup>, and 5 × 10<sup>−5</sup> s<sup>−1</sup>) under room temperature and 630 °C. The results show that the tensile behavior of the alloy is dependent on temperature and strain rate, which derived from the balance between the average dislocation velocity and dislocation density. Furthermore, observed dynamic recrystallized grains under severe deformation reveal the existence of dynamic recovery at 630 °C, which increases the elongation compared to room temperature. Finally, three typical constitutive equations are used to quantitatively describe the tensile deformation behavior of MarBN steel under different strain rates and temperatures. Meanwhile, the constitutive model of flow stress for MarBN steel is developed based on the hyperbolic sine law. |
| first_indexed | 2024-03-09T16:10:30Z |
| format | Article |
| id | doaj.art-ea749378d8464c01818777d45f37fb23 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T16:10:30Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ea749378d8464c01818777d45f37fb232023-11-24T16:20:54ZengMDPI AGMaterials1996-19442022-12-011524874510.3390/ma15248745Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain RatesYifan Cai0Quanyi Wang1Meng Liu2Yunqing Jiang3Tongfei Zou4Yunru Wang5Qingsong Li6Yubing Pei7Hong Zhang8Yongjie Liu9Qingyuan Wang10Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Long-Life High Temperature Materials, Dongfang Turbine Co., Ltd., Deyang 618000, ChinaState Key Laboratory of Long-Life High Temperature Materials, Dongfang Turbine Co., Ltd., Deyang 618000, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaFailure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaTo reduce harmful gas emission and improve the operational efficiency, advanced ultra-supercritical power plants put forward higher requirements on the high temperature mechanical properties of applied materials. In this paper, the tensile behavior and deformation mechanisms of MarBN steel are discussed at different strain rates (5 × 10<sup>−3</sup> s<sup>−1</sup>, 5 × 10<sup>−4</sup> s<sup>−1</sup>, and 5 × 10<sup>−5</sup> s<sup>−1</sup>) under room temperature and 630 °C. The results show that the tensile behavior of the alloy is dependent on temperature and strain rate, which derived from the balance between the average dislocation velocity and dislocation density. Furthermore, observed dynamic recrystallized grains under severe deformation reveal the existence of dynamic recovery at 630 °C, which increases the elongation compared to room temperature. Finally, three typical constitutive equations are used to quantitatively describe the tensile deformation behavior of MarBN steel under different strain rates and temperatures. Meanwhile, the constitutive model of flow stress for MarBN steel is developed based on the hyperbolic sine law.https://www.mdpi.com/1996-1944/15/24/8745MarBN steeltensile behaviordeformation mechanismconstitutive modelmicrostructure |
| spellingShingle | Yifan Cai Quanyi Wang Meng Liu Yunqing Jiang Tongfei Zou Yunru Wang Qingsong Li Yubing Pei Hong Zhang Yongjie Liu Qingyuan Wang Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates Materials MarBN steel tensile behavior deformation mechanism constitutive model microstructure |
| title | Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates |
| title_full | Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates |
| title_fullStr | Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates |
| title_full_unstemmed | Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates |
| title_short | Tensile Behavior, Constitutive Model, and Deformation Mechanisms of MarBN Steel at Various Temperatures and Strain Rates |
| title_sort | tensile behavior constitutive model and deformation mechanisms of marbn steel at various temperatures and strain rates |
| topic | MarBN steel tensile behavior deformation mechanism constitutive model microstructure |
| url | https://www.mdpi.com/1996-1944/15/24/8745 |
| work_keys_str_mv | AT yifancai tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT quanyiwang tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT mengliu tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT yunqingjiang tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT tongfeizou tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT yunruwang tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT qingsongli tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT yubingpei tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT hongzhang tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT yongjieliu tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates AT qingyuanwang tensilebehaviorconstitutivemodelanddeformationmechanismsofmarbnsteelatvarioustemperaturesandstrainrates |